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My dog is suddenly lethargic, limping, and very thirsty. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Goldendoodle | Male | neutered | 5 years and 10 months old | 100 lbs

My dog has a moveable mass on his chest. He is a 6 year old goldendoodle... he is on phenobarbital for seizures and Prozac for seperation anxiety... this past weekend he has had excessive thirst, lethargic & now is limping on his front left leg. He is still eating, and has great appetite. Any idea what could be wrong ?

1 Answer

Most Helpful Answer

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Answered By Dr. Leigh, DVM

Veterinarian

Published on November 13th, 2016

Excessive thirst can be a sign of many different diseases including liver disease, kidney disease, diabetes, infections, Cushing's Addison's, etc. Have your vet take a look at him to determine the cause. Your vet can run lab-work to help diagnose and then determine the best way to treat. The limping may be unrelated and your vet can examine his leg to try to figure out the cause. Hope Hunter feels better soon!

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